The Circulars are technical publications of general interest intended to aid conservation and management. Publications that review in considerable detail and at a high technical level certain broad areas of research appear in this series.

This is an overview of what Canada and the United States are doing together in order to help protect species the two countries deem as endangered. A description of the background of this partnership is given, followed by ten examples of individual...

This is a status assessment of the double-crested cormorant in North America as of 2001. It includes general information on the bird, biological information and area-specific population information for throughout North America.

Critical habitat designation identifies those areas that are essential to the survival and recovery of the Mexican spotted owl, and describes those physical and biological features within those areas that require special management considerations...

DR. CARL LEOPOLD AT “ THE SHACK” Baraboo, Wisconsin By Buddy Huffaker and Steve Swenson September 11, 2003 MR. HUFFAKER: This is oral history about Aldo Carl Leopold. September 11, 2003. At the Leopold Shack and Farm. DR. LEOPOLD: Why...

The following is a time line of significant events that have affected the land and ownership of the property now comprising the National Conservation Training Center (NCTC), with an emphasis on the period from early European settlement until...